Journal of the Korean Physical Society

, Volume 64, Issue 10, pp 1545–1549

Improving the electrochemical properties of Al, Zr Co-doped Li4Ti5O12 as a lithium-ion battery anode material

  • Jung Soo Park
  • Seong-Ho Baek
  • Yiseul Park
  • Jae Hyun Kim
Article

DOI: 10.3938/jkps.64.1545

Cite this article as:
Park, J.S., Baek, SH., Park, Y. et al. Journal of the Korean Physical Society (2014) 64: 1545. doi:10.3938/jkps.64.1545
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Abstract

Li4Ti5O12 and Al3+, Zr4+ co-doped Li(4−x/3)AlxTi(5−5x/3)ZrxO12 (x = 0.01, 0.05, 0.1, 0.15, 0.2) were synthesized at 950 °C via a solid state reaction by using rutile TiO2, Li2 CO3, and Al2O3 as precursors for the anode material of a lithium-ion battery. The average particle sizes of Li(4−x/3)AlxTi(5−5x/3)ZrxO12 (x = 0, 0.01, 0.05, 0.1, 0.15, 0.2) range from 700 to 1200 nm. The particle sizes of pure Li4Ti5O12 and Al3+, Zr4+ co-doped Li4Ti5O12 were not obviously different, but did result in a shift in the (111) peak in X-ray diffraction. Li(4−x/3)AlxTi(5−5x/3)ZrxO12 (x = 0.01) exhibits an excellent rate capability with a reversible capacity of 127.7 mAh/g at a 5 C-rate and even 113.1 mAh/g at a 10 C-rate. The capacity retention was improved remarkably compared to that for an undoped anode when discharged at a high C- rate.

Keywords

Lithium ion batteriesAnode materialsLi4Ti5O12Al and Zr co-doping

PACS numbers

84.60.Dn81.05.Ys

Copyright information

© The Korean Physical Society 2014

Authors and Affiliations

  • Jung Soo Park
    • 1
  • Seong-Ho Baek
    • 1
  • Yiseul Park
    • 1
  • Jae Hyun Kim
    • 1
  1. 1.Division of Green Energy ResearchDaegu-Gyeongbuk Institute of Science and Technology (DGIST)DaeguKorea